The economical production mode is the meaning of a harmonious society. The problem of domestic resource supply and demand is becoming more and more obvious, and the problem of resource shortage has gradually become the main reason that affects the long-term development of society. During the operation of the power plant, some internal electrical system resource consumption and excessive resource waste often occur. This must be carried out through the implementation of more standardized supervision and management measures for the operation of the internal electrical system of the power plant to optimize the power plant electrical energy-saving technology and suppress resource waste. This paper analyzes the application significance of power plant electrical energy-saving technology, and explores the application status and practical application countermeasures of power plant electrical energy-saving technology for reference.
This paper introduces the application of reheat technology in the field of domestic waste incineration power generation and the application status of reheat units at home and abroad, discusses the selection and comparison of steam parameters for waste heat boilers, and puts forward recommended steam parameters. Sliding pressure and constant pressure operation with high adder and deaerator. It is proposed that the steam turbine regenerative system operates with high pressure and the deaerator adopts the sliding pressure operation mode, which is beneficial to improve the economy of the unit.
In order to solve the problems existing in the application of traditional ventilation and air conditioning system in subway such as huge investment, low energy efficiency, high operating costs, and adverse effects on landscape and human settlements, a new non-cooling tower direct expansion air-condition unit is put forward with the remarkable features such as “no cooling tower, environment-friendly, economical and energy saving, simple and efficient, intelligent control, safe and reliable”, and takes the actual project of a metro station in East China as an example. The analysis between “no cooling tower” direct expansion air-conditioning system and traditional subway air-conditioning system is made.
The hydraulic loss of the current heating/cold waterpower conveying system is generally considered to correspond to the conveyed flow or user load. However, in the actual large-scale district cooling/heating system, due to the great difference in the distance between users and the energy station, occupancy rate and occupancy time, etc., under the same load or flow condition of the energy station, there may be multiple pipeline systems. Different resistance losses. This paper analyzes the relationship between water supply pressure and flow under the combined mode of different loads of all users in the pipe network and saves the energy consumption of transportation by adjusting the control method.
由于垃圾渗滤液来源于生活垃圾自然堆放所生成的液体,成份比较复杂,在进入厌氧系统处理时极易造成积泥和堵塞,因此对圾渗滤液成份的仔细分析,结合运行实际数据,定期对厌氧罐进行检修及维护,以保证厌氧系统安全高效运行.
The rising oil price, the increasingly mature new energy vehicle technology, coupled with various advantages such as policy support and preferential subsidies, make the number of electric vehicles continue to increase. After large-scale electric vehicles are connected to the power grid, the charging load will cause a short-term load impact on the power grid. Therefore, the construction of new energy storage and charging integrated power stations has become an urgent problem to be solved. In this regard, this paper expounds the current situation of the new energy optical storage and charging integrated power station, analyzes the difficulties and countermeasures of its key technologies, effectively promotes the actual construction of the power station, and provides reference for its commercial operation and scale promotion.
This paper introduces a feasible and reliable coal-fired industrial boiler SNCR denitrification control system design, elaborated the control system hardware design and software design. The control system takes PLC as the main controller and SCADA with LCD touch screen as the human-computer interaction interface, which realizes the closed-loop control of SNCR denitrification system, improves the denitrification efficiency and the stability of denitrification process control.
The greatest potential of heat storage technology is to solve the problems caused by the mismatch between thermal energy supply and demand in terms of time, space or intensity. The development and utilization of heat storage technology can effectively improve the level of comprehensive energy utilization; it has important application value in the fields of solar thermal utilization, power grid peak regulation, industrial energy conservation and waste heat recovery, building energy conservation and other fields. In recent years, the application of latent heat storage units in industry has received great attention. In this paper, aiming at the industrial application of phase change heat device, the effects of phase change heat device structure, phase change material, heat transfer fluid and heat transfer enhancement of heat exchange device on the performance of phase change heat device are reviewed. The effects of these factors on the heat exchange efficiency of the phase change heat device are described in detail, in order to provide a detailed reference for the research and application of new heat storage systems.
为提升燃气压力管道管理质量和效果,促使其管理更加安全、可靠、规范,相关单位应立足燃气压力管道管理本质,结合自身管理优势,建设合规化管理体系,以推动燃气压力管道管理深化、现代发展.据此,为实现上述目的,文章在笔者自身工作经验基础上,以燃气压力管道合规化管理的意义和思路为着力点,探究其具体管理措施,以供参考.
In recent years, garbage incineration power generation has been greatly developed in China. Boilers are the most critical equipment in the process of garbage incineration power generation. Corrosion of boiler heating surfaces, ash blockage and coking, wear and thinning, prevention of tube explosion and leakage, improvement of boiler thermal efficiency and long-term stable operation are key issues to be considered in boiler design, so as to ensure safe, economic and stable operation of garbage incineration power plants.
In order to obtain the effect of expanded graphite content on the thermal conductivity of NaNO 3 -KNO 3 /EG composite thermal storage materials, NaNO 3 -KNO 3 /EG composites were prepared by aqueous solution method using NaNO 3 -KNO 3 eutectic salt as thermal storage material and different contents of expanded graphite（EG） as the matrix material. The latent heat and thermal conductivity of the composites were measured by simultaneous thermal analyzer（STA） and laser flash apparatus（LFA）, respectively. The results showed that the latent heat of NaNO 3 -KNO 3 /EG composites decreased with the increase of EG content, and the thermal conductivity was significantly improved compared with that of pure nitrate. the average thermal conductivity of the composites was 3.95 W/（m-K） at 20% mass fraction of EG, which was 7.4 times higher than that of nitrate. The preparation of composite thermal storage materials by adding EG to binary nitrates is a promising candidate for improving their heat transfer performance.
The flow of the steam turbine shaft seal is one of the most complex flows in modern high-efficiency steam turbines. The accurate prediction of internal flow field can improve the safety and economy of steam turbine operation. Steam flow characteristics and shaft seal sealing performance was studied by using the Unsteady Reynolds-averaged Navier-Stokes（URANS） model of the ANSYS simulation software and then predict the flow field and pressure field of the steam turbine shaft seal by self-designed. The simulation results show that the flow is unstable under different conditions, increasing the inlet pressure and reducing the clearance between the comb teeth and the convex shaft can make the eddy current more obvious in the shaft seal, the throttling and pressure reduction was more obvious, and the mechanical seal effect was better.
Therefore, it is of far-reaching significance to study these “small, scattered and remote” production management modes and rebuild a “streamlined, practical, efficient and compliant” production management system. Here, this paper focuses on the research on the production management and control mode of these “small” and “scattered” distributed energy stations, and proposes to adopt the production management and control mode of horizontal integration. By giving full play to the advantages of professional concentration and scale, we can obtain higher quality, lower cost and meet the needs of production and operation efficiency more quickly. The concept of these management and control modes also plays a reference role for the rapid development of subsequent new energy projects.
Although under the background of new engineering, the society is in urgent need of high-quality technical talents who meet the development requirements of the new era and have innovative consciousness, but there is still a big gap of excellent engineering and technical talents rooted in the front line. This paper puts forward from the basic requirements of electrical professional post group for professional courses, with employment, ability, achievement-oriented, find the right course positioning, with “one main line, three dimensions, three dimensions” education mode, fully explore the knowledge elements linking the knowledge and skills to master with the practical problems of enterprise engineering. From the perspective of talent training objectives and serving the local economic development of our school, the feasibility and effectiveness of electrical engineering and automation as an example to discuss the feasibility and effectiveness of the multiple education model.
As a developing country, China has not yet reached a very rapid development level in high-tech development, based on our basic national conditions, many industrial structures are also faced with the introduction of various information technology, sustainable development concept and other concepts in the new century requires a comprehensive overhaul. For example, silk reeling enterprises in the tertiary industry often have large energy consumption, traditional production technology and other problems, in response to the existing problems and the need to comply with the requirements of today’s scientific concept of development, this paper discusses how to achieve high-quality development of silk reeling enterprises in today’s double carbon background to reduce energy loss and reduce carbon emissions, and seeks to play a role in the development of silk reeling enterprises in Yizhou District, Hechi City.
The water wall of the waste-to-energy power plant boiler is easily affected by corrosion, which can easily lead to tube burst accidents, which threatens the production safety of the waste-to-energy power plant. Therefore, during the operation of the current waste-to-energy plant boiler, it is required to prevent corrosion of the water wall structure. The main method used is Including surface protection of water-cooled wall, optimization of water-cooled wall materials, etc., through the solution and prevention of corrosion problems, to ensure the safe operation of boilers in waste-to-energy power plants, and then to ensure the working state of the entire power plant.
以内蒙古地区粉煤灰综合利用为例,分析包头市、呼和浩特市、鄂尔多斯市、锡林郭勒盟具备地区发展特点的粉煤灰资源综合利用途径.基于当前国家积极推动"双碳"目标的相关举措,结合当前粉煤灰资源综合利用途径,发现内蒙古地区粉煤灰综合利用存在的问题,给出相对应的解决方案.
我国是煤炭生产大国,由于煤矿开采技术水平较低,导致我国煤矿安全事故频发.相关部门设计软件对煤矿安全生产进行监管,主要系统包括煤矿安全生产监控系统、煤矿通信系统等.随着信息技术的应用发展,系统功能不断完善.煤矿安全监控系统与移动设备结合成为煤矿安全管理的趋势.现代信息技术引导下,将计算机技术引入煤矿安全管理对提高管理水平,增加企业效益具有重要作用.本文分析基于信息技术的煤矿安全管理系统,探讨信息技术在安全管理中的应用.
以"电力赋能智慧农业,助力乡村振兴"为指引,将智慧农业作为乡村振兴,助力农村现代化的重要举措,推进"碳达峰、碳中和".本文依托融合终端的边缘计算能力及配网Ⅳ区云主站,智能控制可移动式厂房的光、储、充、用各部分工作状态,精准控制新型葡萄"晾房"温、湿度和循环风力,打造多能互补的零碳排农业生产模式,解决葡萄干从种植到加工的风险对抗能力弱、葡萄干加工周期长、食品卫生安全存在隐患等问题,从而实现从葡萄种植到加工的科学全流程管理,大幅提升传统农业生产效率及安全水平.
本文介绍了机组DEH系统调门的伺服卡件冗余改造,对其工作原理、上电过程、状态切换进行了概述.采用该冗余伺服卡件能更稳定、更迅速、更准确地完成目标,更大限度地提高系统的可靠性,为机组的安全运行提供了基础保障.
